MI5 spy chief says Russia, Iran behind 'staggering' rise in deadly plots

FILE - MI5 Director General Ken McCallum is photographed in London, Oct. 14, 2020.

Britain is facing a "staggering rise" in attempts at assassination, sabotage and other crimes on U.K. soil by Russia and Iran, as the two states recruit criminals to "do their dirty work," the head of Britain's domestic intelligence agency said Tuesday.